20.500.12556/RUL-186403 Analize sočasnosti nastopa vročinskih valov in suš na območju Slovenije magistrsko delo Analysis of the co-occurrence of heatwaves and droughts in Slovenia V nalogi je ovrednoteno 76-letno (1950-2025) obdobje dinamike sočasnega nastopa suš in vročinskih valov v Sloveniji po 30-letnih časovnih obdobjih: 1950-1979, 1980-2009 in 1996- 2025. Uporabljeni so bili podatki reanalize ERA5 Land, ki so bili validirani z 8 meteorološkimi postajami ARSO. Za opredelitev vročinskih valov je bil uporabljen faktor toplotnega presežka (EHF) in za opredelitev suš standardizirani padavinski indeks (SPI). Sočasni vpliv suš in vročinskih valov je bil določen z razvitim indeksom sovpadanja suš in vročinskih valov (CDHI). Validacija podatkov ERA5 Land je potrdila visoko zanesljivost reanalize temperature zraka v nižinskem in urbanem okolju (r = 0,98-0,99), medtem ko so v visokogorju (Kredarica) odstopanja zaradi grobe prostorske ločljivosti večja. Pri padavinah je zanesljivost reanalize nekoliko slabša a vseeno relativno dobra (r=0,84-0,86). V zadnjem 30-letnem obdobju 1996- 2025 so se temperature zraka izrazito povišale in sicer od 1,8 °C do 3,3 °C. Število dni z vročinskimi valovi se je v istem obdobju (1996-2025) povišalo za 25 do 38 dni. Padavine v tem obdobju (1996-2025) nimajo značilnega letnega trenda, izstopa le mesec maj s statistično značilnim (p < 0,05) povečanjem padavin. Indeks CDHI je v zadnjem 30-letnem obdobju pokazal, da so območja, kjer je sovpadanje najmočnejše, v zahodni in jugozahodni Sloveniji, z 10% do 20% pogostostjo ponavljanja. Rezultati opozarjajo na nujnost proaktivnega upravljanja z vodami. The study evaluates a 76-year period (1950–2025) of co-occurrence of droughts and heatwaves in Slovenia across 30-year time blocks: 1950–1979, 1980–2009, and 1996–2025. Data from the ERA5 Land reanalysis were used and validated against eight meteorological stations operated by Slovenian Environment Agency (ARSO). The Excess Heat Factor (EHF) was used to define heatwaves, and the Standardized Precipitation Index (SPI) was used for droughts assessments. The compound impact of droughts and heatwaves was determined using the developed Compound Drought Heatwave Index (CDHI). Validation of the ERA5 Land data confirmed the high reliability of the air temperature reanalysis in lowland and urban environments (r = 0.98–0.99), whereas larger deviations occurred in high-mountain areas (Kredarica) due to coarse spatial resolution of ERA5 Land dataset. For precipitation, the reliability of the reanalysis is relatively good (r = 0.84–0.86). During the 1996–2025 period, air temperatures increased significantly, rising by 1.8 °C to 3.3 °C. The number of heatwave days in the same period (1996-2025) increased by 25 to 38 days. Precipitation shows no significant annual trend, with only the month of May standing out with a statistically significant (p < 0,05) increase in rainfall. The CDHI index demonstrates that the areas with the strongest cooccurrence are in western and southwestern Slovenia, with a recurrence frequency of 10% to 20%. The results highlight the necessity of proactive water management. magistrska dela gradbeništvo sovpadanje vročinski valovi suše faktor toplotnega presežka (EHF) standardizirani padavinski indeks (SPI) indeks sovpadanja suš in vročinskih valov (CDHI) master thesis civil engineering compound heatwave drought excess heat factor (EHF) standardized precipitation index (SPI) compound drought and heat index (CDHI) true false false [L. Stare] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2026-09-01 08:47:13 2026-09-01 08:47:22 2026-09-03 12:22:57 0000-00-00 00:00:00 2026 0 Ljubljana 2026 Ljubljana 1 spletni vir (1 datotek PDF (XVI, 111 str., [57]str. pril.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 632.112:632.111.8(497.4)(043.2) 181512 289911555 22535.pdf 22535.pdf 1 10A0A7547F78B7E9D8C74C78AA5DE1F3 826672d8b55485d77f01db00b54c906ab2dad97d644f6d6e0ae4b0fe6c5dd87e 925e7c18-a5d0-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=245644 Fakulteta za gradbeništvo in geodezijo 0 0 0